Field measurement of transport and distribution of suspended sediment in the Nakdong river basin

Sunghyun Kwak, Joo Suk Ko, Siwan Lyu, Kyungsu Lee, Hanil Cho

Tuesday 30 june 2015

17:48 - 17:51h at Mississippi (level 1)

Themes: (T) Sediment management and morphodynamics, (ST) Sediment transport mechanisms and modelling, Poster pitches

Parallel session: Poster pitches: 7A. Sediment - Erosion

Determining the flux of flow and sediments transported through the system is essential to understand the dynamics of the basin. Especially, it is necessary to obtain the information on the geomorphological characteristics of channel and the mechanism of sediment transport in order to establishing the proper measures for river management after abrupt changes of river environment. This paper presents the result of field measurement over a specific reach in the Nakdong River for the transport and distribution of suspended sediment using LISST (Laser In-Situ Scattering and Transmissometry, LISST-100X from Sequoia) and ADCP (M9 from SonTek) respectively. For 6 sections over 10 km downstream of Gangjeong-Goryong weir and the confluence of Geumho River, transversal and vertical distributions of volumetric concentration of suspended sediment(